Aws-sam-cli: support packaged CodeUri

[joekiller]

Our SAM template references a zip file CodeUri as our stuff is compiled prior to deployment but aws-sam-local doesn't handle this very well. Ie CodeUri: ../target/lambda.zip

Error:

 Could not invoke function: Error response from daemon: oci runtime error: container_linux.go:262: starting container process caused "process_linux.go:339: container init caused \"rootfs_linux.go:57: mounting \\\"/home/myuser/lambda-code/target/lambda.zip\\\" to rootfs \\\"/var/lib/docker/overlay2/ef772db7acbb72271b6e24b4af6937a30adfa608d595aeae6fa2411f586d11fd/merged\\\" at \\\"/var/lib/docker/overlay2/ef772db7acbb72271b6e24b4af6937a30adfa608d595aeae6fa2411f586d11fd/merged/var/task\\\" caused \\\"not a directory\\\"\""
: Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type

[sanathkr]

Agreed, this is a very common use case and we should support it.

[cjsauer]

Looking forward to this feature as well!

[PaulMaddox]

Working on this at the moment.
Should be done later today if all goes well.

[PaulMaddox]

This is now implemented by pull request #75 (automatic unzipping of packaged archives such as JAR/ZIP).

With the new version:

Resources:
  PetStoreFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: com.amazonaws.serverless.sample.jersey.LambdaHandler::handleRequest
      Runtime: java8
      CodeUri: target/serverless-jersey-example-1.0-SNAPSHOT.jar
      ... snip ...

$ git clone https://github.com/awslabs/aws-serverless-java-container
$ cd aws-serverless-java-container/samples/jersey/pet-store
$ mvn package
$ sam local start-api -t sam.yaml
2017/08/18 15:25:00 Connected to Docker 1.30
2017/08/18 15:25:00 Successfully parsed sam.yaml (version 2010-09-09)
2017/08/18 15:25:00 Fetching lambci/lambda:java8 image for java8 runtime...
java8: Pulling from lambci/lambda
Digest: sha256:668979530863a155b52533947e782fe164908eda2d6c5741317511bfa036d8cf
Status: Image is up to date for lambci/lambda:java8

Mounting com.amazonaws.serverless.sample.jersey.LambdaHandler::handleRequest (java8) at http://127.0.0.1:3000/{proxy+} [OPTIONS GET HEAD POST PUT DELETE TRACE CONNECT]

You can now browse to the above endpoints to invoke your functions.
You do not need to restart/reload SAM CLI while working on your functions,
changes will be reflected instantly/automatically. You only need to restart
SAM CLI if you update your AWS SAM template.

2017/08/18 15:26:17 Invoking com.amazonaws.serverless.sample.jersey.LambdaHandler::handleRequest (java8)
2017/08/18 15:26:17 Decompressing serverless-jersey-example-1.0-SNAPSHOT.jar into runtime container...
log4j:WARN No appenders could be found for logger (com.amazonaws.serverless.proxy.internal.LambdaContainerHandler).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
START RequestId: 0aee9bbe-79d0-480a-8efb-9dfd35ca68b8 Version: $LATEST
END RequestId: 0aee9bbe-79d0-480a-8efb-9dfd35ca68b8
REPORT RequestId: 0aee9bbe-79d0-480a-8efb-9dfd35ca68b8  Duration: 454.63 ms     Billed Duration: 500 ms Memory Size: 512 MB     Max Memory Used: 13 MB

and the HTTP response from http://localhost:3000/pets

[{"id":"d2d77c29-4426-4c1c-9445-15367993db21","breed":"Jack Russell Terrier","name":"Teddy","dateOfBirth":1448375182603},{"id":"918c5a08-abb2-43fc-a9e5-40ab4a9f538d","breed":"Beagle","name":"Max","dateOfBirth":1304605582603},{"id":"4416e7df-40e0-4695-b622-4c64336a55eb","breed":"Afghan Hound","name":"Bear","dateOfBirth":1196778382604},{"id":"046f0a53-e851-4105-b024-411cead3d2a7","breed":"Beagle","name":"Jack\t","dateOfBirth":1011450382604},{"id":"9078d215-7bcc-4534-9e2a-d3aaf6a45ef6","breed":"Dalmatian","name":"Bella","dateOfBirth":1309098382604},{"id":"9911779b-398f-4f6a-b4ae-da3b531d3e0d","breed":"Jack Russell Terrier","name":"Maggie","dateOfBirth":1093184782604},{"id":"a6838c72-aabc-45bf-93cd-b08157493c22","breed":"Bloodhound","name":"Ginger","dateOfBirth":1331130382604},{"id":"a420d1cc-ba29-4731-87a8-64a0a3fc9eaa","breed":"Beagle","name":"Princess","dateOfBirth":1035901582604},{"id":"5decb878-15b4-4c01-8bcf-33bde8bbbcf7","breed":"Dalmatian","name":"Roxy","dateOfBirth":1122301582604},{"id":"22a64d5f-e20c-42f8-9745-2357ded83add","breed":"Afghan Hound","name":"Lola","dateOfBirth":1202135182604}]

This will be included in our next release. I don't have an exact date right now, but it won't be long.